Separator for granular material



Nov. 19, 1929. G. F. ROYER SEPARAT OR FOR GRANULAR MATERIAL Filed July 7, 1927 2 Sheets-Sheet gwuentoz E. Z m M alroz new Nov. 19, 1929.

G. F. ROYER SEPARATOR FOR GRANULAR MATERIAL Filed Ju1y '7, 1927 2 Sheets-Sheet 2 gwuamtoz I Geo/ye gye/L I ZW,

v v lmmu Patented Nov. 19, 1929 *LFF CEL- GEORGE EOYEB, or WILKEs-BARRE, PENNSYLVANIA, Assiqiioit sesame roUNnRY rm) MACHINE co,

"TION or PENNSYLVANIA snrnrtn'ron r03 GRANULAR MATERIAL A iplication filed my 7, 1927. Serial no. 204,028.

The present invention relates to improvev 7 ments in separators for granular material of the type or class in whlchthe material to be tre'ated is deposited in a hopperror between lateral walls upon a vertically inclined endlessl belt, provided with outwardly pro jecting' sprigs, preferably of metal, which act to separate and collect small particles from the mass, said'particles being discharged as the belt passes over the upper supporting pulley or roller.

Separators of this type are particularly useful in the treatment of molders sand, to

separate the sand particles from undersirable materials, suchas nails, p eces of metal, etc., that may have become mixed therewith, and

to mix such separated particles 'with particlesof fresh sand supplied to the belt. As the'belt is rotated at a relatively. high speed, the'particles collected therebyare discharged through the air to a point at a considerable distance from the belt, thus aerating the sand with the attending beneficial results in forming molds therefrom. V

The. present invention relates particularly to, the constructionof theseparator belt of such an apparatus, and this may be used for treating material other than molders sand However, as an example,'the improvements 'a re'shown as embodied in a machine particle larly designed for treating nolders sand.

" In theaccompanying drawingr Figure 1 is an elevation, partlybroken away, of amolding sand treating and blend Ting machine provided wlthan embodiment of the present invention.

'Figure 2 is a transverse sectional v ew through the hopper and upperportion. of

the separating belt ofsu ch a machine.

gure a :detail section substantially 9 't e line33 of Figure 2.

Figure 4 is a plan of the'fse'parating belt.

Figure 5 is [a sectional detail ofa slightly modified form of belt:

Figure 6 isa'p'la'n of another modified form 'ofbelt. E 7

Figure 7 is a sectional view substantially on the line 7,7 of Figure 6.

" Figure 8 is a view'substantially'on the 5 -1 58 H of i ur -e;

a relatively high speed.

ited to this-particular use.

or, wrrinnsusannnyrEnnsY vAnrA, A conronnto separate particles -therefro1n,the separated I particles collected upon the belt in the spaces s between the sprigs'being discharged as the orpulleyil. r A

The separator belt-and hopper are, as shown, mounted' on a suitabletruck having ground wheelst, so {that it is readily movable over a foundry flooror'othersupporting surface Thefra'me of' the truckineludes angle iron members QO'between which the hopper l ispositioned and the inwardly directed lower edge portionsfll of :the side walls of the hopper, hereinafter referred to,

belt passes overtheupper supporting roller are strengthened by angle iron strips 21 attached to the members 20; On the truck, within a suitable casing 5, is mounted a motor,

preferably an electric motor, and this,

through suitable sprocket and chain gearing, drives the upper belt supportingr'oller 3 at Nails, pieces of metal, and i otherdundesirmolders sand, are prevented from being carried over the belt supporting roller 3 by upper end of the hopperv 1.: a

. able material that may bevnriixedwith the suitable yieldingv'fingers 6, arranged at'the As before noted,the particular subject ma-tc ter of'the present invention is the separator belt, and although ODGQTEOIIII J of apparatus in; which it is particularly useful has been i thus briefly described, itis not to be under stood that the invention-is inany sense The belt'2 is preferably off woven textile materialp'andfthe sprigs, which constitute the separating means, are'formed-by V angularly shaped metal'plates, the basesof which are 'firmly' secured to the body of the belt, 'while the angular portions thereof extend outward from the belt, and the free edges of which are serrated.

As shown in Figure 2, all the sprigs in a row may be integral, or have a single base plate 7 which 'extends'continuously through; out the length of the row, or a plurality of shorter plates maybe arranged in transverse alignment. The outward projecting flange of each plate as above stated, serrated to "provide a plurality of sprigs 8, and the several plates are arranged in rows,.s0 that spaces are provided to receive the small particles of the sand, or other material, separated from the mass of material deposited in the hop- P KL.v a m The base members 7 of each sprig plate may beitastened securely to the body ofithe belt i fe yf i itab emel ii hw m eea sell g c mpri e ap -l k Tr a @8 9, which extendthrough apertures in the plate and-penetrate thebodyofthe belt2.

I, -A s shownparticnlarly in F'gures 3iand i,

the. 2S6VQI341'I plat s, are so a ranged upon the .belt'Q that the sprigsSeI one are outof align- .ment, longitudinally of the belt with the sprigs of thesnext plate in theseries, and,

7 preferably, also as shown ,in' Figured, the

several plates do mean extend to ,both edges of the,belt2, .buteveryalternate plate is set back some distance from one edge'of the belt. That is the ends of alternate rows of sprigs -are=;situat e,d' nearer the adjacent side edge of the belt than the corresponding ends ,of the intermediate rows,(see Figures 2, 5L, 6 -a'nd 71).; This, relative arrangement of the ends of the ;rowsjof sprigs andtheedge of the .belt is duplicatedat both edges of the belt,

so that while theqrows of sprigs are all of equal length the endsof each row are spaced ldiiferently from the adjacent edges of the belt; '1 a H The-sprigs in everylro'w extend throughout vthe width of the space; separating the lower edges of the side walls of the hopper, so that the entire lower surface of material in the :h opperis subjected to the combing action of the ,sprigs, but wither. relative arrangement of theplates is such that pockets are formed at the endslof the-rows as well as between s'uccessive plates in the series.

Practi'cal experience wlth machines em- 5 'bodying thevinvention herein described has shown that byproviding the'spaces or pockets i ends of the rows-ofsp rigs the tendency of the sand to clog between the" ends of the rowsofsp'rigsand the marginal beads ori'r'ibs ,on the beltismateri'ally fedu d} WVhenthe rows of 'sprigsare uor the" same 'length d A an extend to. the maximum extent .a'cross'the V belt there isa tendeiic'y forthe: sandito'clog I betweenthe ends of the rows of Spfi saad the narginal beads or ribsto. such an extent as to interfere with its free expulsion by the and suitably attached thereto. a o El Referring to Figure Z'it willb'e seen the ina'rgirial beadsf or flange-flilge'po the belt'2, 'which,,'as shown, arefo gr all yjvviththe wo'venbody,"exten or We d 5 of Ithelsprigs 8, and 'c'o titut'e the b6 .s'iclejivvalls'll, of w iiehjjaies 'clined inward somewhat, so

iznodified form r "separate: belt In bodiinent of vthe inventiomflthej arg nal 'srp i r ss sai fifl fite a -"c61- Iiare scour. d. by, rivets 15, or imrlziffiis the spaces ,between the. ends of ther sprigs and the edgesfloffth action of centrifugal force as the belt passes, I a

over the upper supporting pulley.

'A distinguishing feature of the present inventionis that the separator belt is provided with 'rnarginalfflange-li'ke iport'iofns, ;rojecting outward from'thesprig supporting face,

adjacent its edges, so that particles collected a in the space'sb'etween thesprig's cannot escape laterally over "the edgescf" the belt. J'Such marginal flange likemen-ib'ers" may, as shown in Figure 2, be formed integrally with the body ofthebelt, or they may, as illustrated in'tlle modifiedforms which will be hereinaftermore particularly described, be formed initially separate from the body of the belt 30 substantiall to 'th'ejpl'a'ri'e.oif theioiiter Id tithe hoppe 1, thel the hopper adjacent the beltisless'tlian 't its 'outeriopenend Instead of fm'a'kiiig the inafgijnalbeads iir firvfith th bo y :ofithe belt, su'chf portions I niayf tame-d ter 55 of ntat'er'ial 's'iinilar to: thebQdyTQf belt, as 12, and these'seciir o-tl iefbel by sewing, riveting, 10 otherj's table ,the 1 spaces 'jbet'weengthei successive plates; are H so small that particles efmaterial; collected in;

by the belt will cnotfescapetherethro gh. Aspreviou'sly describedfand Figure 2,,tlie loweriportions; H walls of thehdpper are inclined nw rd and said inclined portions extend over frame members, 'Thefportioi sllof' hopf per walls, and ffthe lbo t'toin flanges f'fs'aid frame members extendjoverthejjend nibers ,of the;rows,of.sprigs,ffso.jthatjiii ital, de-

osited the hopper 'a'nn'ot 'falldirectly terial is laterally confined in the-jiathbf tlie sprigs. a The operation anda'dvaiiftages of the iii to il25 vention will, it is believed, be readily appreciated from the foregoing description in connection with the drawings.

The mass of material deposited in the hop- 7 per 1 will be laterally confined in the path of the outer ends of the sprigs on the belt by the side walls of the hopper 1 and will be subjected to a combing or scraping action by said sprigs on the rapidly travelling separator belt. The small particles thereby separated and collected in the spaces between the sprigs will be discharged in a stream from the upper end of the belt, and the supporting pulley or roller 3.

The construction of the belt is such that the particles collected thereby will not be permitted to escape over the side edges, and it is not necessary to provide the frame of the machine with means for preventing such spilling of the separated particles.

It will be understood that in the drawings, the parts are shown more or less conventionally, and diagrammatically, and that there can be variation in some of the details shown without departing from the invention.

I claim:

1. A separator comprising a driven endless belt having longitudinally extending edge members projecting from one face, and

a plurality of rows of sprigs extending transversely of said face of the belt, the ends of alternate rows of said sprigs being spaced. from one of the edge members a distance greater than that separating the ends of intermediate rows from the same edge member.

2. A separator comprising a driven endless belt provided with outwardly projecting edge members and having within the channel formed by said members and the belt a 40 series of rows of outwardly proj ecting sprigs, the ends of successive rows being spaced at different distances from the adjacent edge member. 7

3. A separator comprising a driven enclless belt provided with outwardly projecting edge members and having within the channel formed by said members and the belt a series of rows of outwardly projecting sprigs, the ends of alternate rows being spaced 5;) from the adjacent edge member a distance greater than that separating the ends of illtermediate rows from that edge member, and the opposite ends of the rows being related to the other edge member.

In testimony whereof I have hereunto set my hand. 7 r GEORGE F. ROYEB. 

